The Twin Air Air Box Cover for Beta 125-300 RR (2013-2019) and 350/390/400/525 RR (2013-2019), and X-Trainer 250/300 (2013-2022) is designed to prevent water and cleaner from entering your air intake during cleaning. Constructed from durable ABS plastic, it features a rubber sealing ring for a leak-free fit. Simply remove the air filter and install the cover with the provided mounting screw (if applicable). This essential accessory ensures maximum waterproofness, allowing for cleaning with water without infiltration risk, and is recommended for high-pressure cleaning.